🏷️ Basic Information

Make:

Subaru

Model:

XT / XT6

Year:

1991

👋 Introduction

Positioning:

The 1991 Subaru XT and XT6 represented Subaru's entry into the personal luxury/sports coupe market, focusing on distinctive styling and its signature AWD system. This manual is essential for owners and technicians working on these unique vehicles.

Competitors:

Competed with vehicles like the Toyota Celica, Mitsubishi Eclipse, and Ford Probe, offering a unique AWD advantage and distinctive 'Brat-like' styling cues in its lineage.

Features:

Aerodynamic 'wedge' styling, optional 'turbo' engine (XT), Symmetrical All-Wheel Drive, unique interior design, pop-up headlights.

📋 Manual Details

Systems Covered:

Engine Mechanical, Engine Fuel & Emission Control, Engine Electrical, Drivetrain (AWD System), Transmission (Manual & Automatic), Suspension, Steering, Brakes, Body Electrical, Climate Control, Body & Chassis, Wiring Diagrams, Maintenance, Troubleshooting, Diagnostics

Pages:

Approximately 1500+

Type:

Factory Service Manual (FSM) / Repair Manual

Language:

English

Format:

Printed Paperback

📖 Manual Coverage

Engine Mechanical:

Cylinder head, valve train, pistons, connecting rods, crankshaft, engine assembly, lubrication system, cooling system

Engine Fuel Emission:

Fuel injection system (MPI), throttle body, exhaust system, emissions control systems (catalytic converter, EGR), fuel pump, fuel filter

Engine Electrical:

Ignition system, starter motor, alternator, battery, ECU (Engine Control Unit) and sensor diagnostics

Drivetrain:

Subaru's Symmetrical All-Wheel Drive (AWD) system, front and rear differentials, driveshafts, CV joints

Transmission:

4-speed Automatic Transmission (4EAT) and 5-speed Manual Transmission, clutch system, torque converter, transmission fluid specifications and service

Suspension:

Front suspension (struts, control arms), rear suspension (struts, trailing arms), springs, shock absorbers, wheel alignment specifications

Steering:

Power steering system, steering rack, steering column, universal joints, steering fluid specifications

Brakes:

Front and rear disc brakes, brake master cylinder, brake lines, ABS (Anti-lock Braking System) components and diagnostics, brake fluid specifications

Body Electrical:

Lighting system, wipers, power windows, door locks, mirrors, horn, interior and exterior lamps, fuse box, relay locations

Climate Control:

Air conditioning system (R-12 refrigerant), heating system, blower motor, controls, refrigerant charging specifications

Body Chassis:

Body panels, doors, hood, trunk lid, interior trim, bumpers, chassis components, structural integrity

Wiring Diagrams:

Complete, detailed wiring schematics for all vehicle systems

Maintenance:

Oil changes, filter replacements (oil, air, fuel), spark plug replacement, coolant flush, brake fluid service, transmission fluid service, belt inspection and replacement

Troubleshooting:

Diagnostic procedures for common and complex issues, symptom-based troubleshooting charts

Repair:

Detailed step-by-step instructions for component removal, installation, and repair for all major systems

Diagnostics:

Engine diagnostic codes (OBD-I equivalent), sensor testing, component testing procedures

Depth:

Comprehensive from basic maintenance to complete engine and transmission overhauls, including electrical system troubleshooting and component-level repair.

📊 Manual Specifications

Format:

Printed, bound manual

Quality:

High-quality printing with clear diagrams and text

Binding:

Perfect bound or stitched binding for durability

Paper:

Durable, semi-gloss paper stock suitable for workshop use

⚙️ Engine Specifications

Engine Xt:

2.7L EA82T (Turbocharged) Boxer-4

Engine Xt6:

3.0L ER27 Boxer-6

Horsepower Xt:

115 hp @ 5200 rpm (Naturally Aspirated) / 130 hp @ 4800 rpm (Turbocharged)

Torque Xt:

124 lb-ft @ 2800 rpm (Naturally Aspirated) / 144 lb-ft @ 2400 rpm (Turbocharged)

Horsepower Xt6:

145 hp @ 5600 rpm

Torque Xt6:

166 lb-ft @ 4000 rpm

Fuel System Type:

Multi-Point Fuel Injection (MPI) for both engines

Fuel Requirement:

Unleaded gasoline (87 octane recommended for naturally aspirated, 91 octane recommended for turbo/XT6)

Engine Code:

EA82T

Engine Code:

ER27

🔧 Transmission

Transmission Xt Standard:

5-Speed Manual Transmission

Transmission Xt6 Standard:

4-Speed Automatic Transmission (4EAT) with AWD

Transmission Xt Optional:

4-Speed Automatic Transmission (4EAT) with AWD

AWD System:

Full-time Symmetrical All-Wheel Drive with viscous coupling center differential (manual) or electronic control (automatic).

Atf Type:

Subaru ATF HP / Dexron III (refer to manual for exact specification)

Mtf Type:

GL-5 Gear Oil (refer to manual for viscosity)

📐 Dimensions

Length:

Approximately 177 inches

Width:

Approximately 67 inches

Height:

Approximately 51 inches

Wheelbase:

Approximately 97.2 inches

Curb Weight:

Approximately 2800 - 3100 lbs (depending on model and features)

Cargo Space:

Trunk space suitable for coupes of the era, folding rear seats for extended cargo.

Tire Specifications:

Commonly 205/60R14 or 205/55R15 (verify with specific trim/options)

Bolt Pattern:

5x100mm

🛡️ Safety Features

NHTSA Rating:

Era-appropriate safety features; specific NHTSA ratings may not be readily available for this specific model year and variant.

Active Safety:

Anti-lock Braking System (ABS) optional on some trims.

Passive Safety:

Three-point seatbelts, front crumple zones, reinforced passenger compartment, driver-side airbag (optional/standard on some trims).

💡 Technology Features

Infotainment System:

Factory original AM/FM stereo with cassette player, optional CD player. Manual details speaker replacement and head unit removal/installation.

Driver Assistance Features:

Limited by era; primary driver assistance is the AWD system for enhanced traction.

Connectivity Features:

No modern connectivity features (Bluetooth, USB). Manual covers basic antenna and wiring for aftermarket additions.

🔧 Maintenance

Oil Change Interval:

Every 3,750 miles or 3 months (refer to manual for specific conditions)

Filter Replacement Intervals:

Air filter: 15,000 miles or 12 months; Fuel filter: 30,000 miles (replace more frequently in dusty conditions).

Spark Plug Replacement:

Every 30,000 miles (NGK, Denso, or equivalent recommended)

Coolant Flush Interval:

Every 30,000 miles or 24 months

Engine Oil Type:

SAE 10W-30 or 10W-40 API SG/SH (refer to manual for climate suitability)

Coolant Type:

Ethylene Glycol based coolant, 50/50 mix with distilled water

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid

Common Problems:

Head gasket leaks (especially on EJ series, though less common on EA82T/ER27), turbocharger issues (on XT Turbo), suspension wear, electrical gremlins, AC system leaks (R-12),

Specific Issues:

Dashboard cracking, window regulator failure, rust on common areas (wheel arches, sills).

📚 Vehicle History

Subaru Heritage:

Subaru, a division of Subaru Corporation (formerly Fuji Heavy Industries), has a long history of pioneering All-Wheel Drive technology, originating in aerospace. Known for its boxer engines and durable vehicles.

Xt Evolution:

The XT (Leone Coupe/Van in some markets) was introduced in 1985, with the XT6 variant featuring the unique 6-cylinder boxer engine. The 1991 model year represents the final iteration before production ended.

Production Years:

Subaru XT: 1985-1991; Subaru XT6: 1987-1991

Location:

Japan

🏆 Awards & Recognition

Automotive Awards:

While specific awards for the 1991 XT/XT6 are not widely documented, Subaru's reputation for AWD and durability was well-established by this period. The XT was noted for its futuristic design for its time.